Stunning Gowns on Gossip Girl

Spotted: Kelly Rutherford, Clemence Poesy and Blake Lively in some serious floor-length gowns on the set of Gossip Girl. Are they feting another foreign ambassador? Or attending an exclusive art auction, perhaps? One thing's for certain, they're up for best-dressed wherever they're headed. Serena steals the show as per usual in an embellished Jenny Packham gown. Eva (played by Poesy) makes a fashion-forward play in a multi-colored strapless Carlos Miele gown. And Lily is every bit the sophisticate in a regal purple Reem Acra gown and statement-making gold necklace.